| Patent application number | Description | Published |
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| 20080225823 | SCHEDULING OF DYNAMIC BROADCAST CHANNEL - System(s) and method(s) are provided that facilitate scheduling system information. Scheduling of system information exploits a control channel associated with a broadcast channel (BCH), and utilizes reference information (e.g., a time reference or a scheduling reference) in addition to system information typically carried by scheduling units (SUs). Scheduling proceeds primarily according to three planning types. (i) A SU carries an indication of a time at which a disparate SU is to be scheduled in the control channel associated with the BCH. The indicated time is a specific time slot in the control channel or a lower bound for an actual scheduling instant. (ii) A first SU indicates a time cycle, or time period, for scheduling disparate scheduling units in the control channel associated with the BCH. (iii) A first SU carries a time indication to a second SU in a same control channel, the second SU indicates a time at which a third SU is to be scheduled. | 09-18-2008 |
| 20080273524 | SPLIT AND SEQUENTIAL PAGING FOR VOICE CALL CONTINUITY - Systems and methodologies are described that facilitate paging for establishing a Voice Call Continuity (VCC)-supported voice call in a network containing access point(s) that can support packet switched (PS) voice communication, such as Voice over Internet Protocol (VoIP), and access point(s) that can support only circuit switched (CS) voice communication. Paging signals as described herein are selectively delivered, such that a desired terminal receives a single PS paging signal if located at a VoIP-capable access point and a single CS paging signal otherwise. A split paging technique is described herein, wherein PS paging signals are delivered to VoIP-capable access points and CS paging signals are delivered to non-VoIP-capable access points substantially simultaneously. Additionally, a sequential paging technique is described herein, wherein PS paging signals are delivered to VoIP-capable access points and, if no response is received from a desired terminal, CS-domain paging is conducted. | 11-06-2008 |
| 20080318546 | SECURITY ACTIVATION IN WIRELESS COMMUNICATIONS NETWORKS - Systems and methodologies are described that facilitate security activation within a specified security activation time. Thus, where handover occurs or is initiated within the activation time, security keys can be activated in such a way as to not be substantially affected by the handover. In one example, a handover time can be set to occur beyond the security activation time to ensure the security activation happens first. Additionally, a handover command can comprise security keys that can be activated upon handover in another example. Moreover, in non-real-time contexts, dummy packets can be transmitted to allow timer operability with packet sequence numbering, or security activation times can be substantially ignored by utilizing a verification process. | 12-25-2008 |
| 20080318596 | Method and Apparatus for Determining the Position of a Base Station in a Cellular Communication Network - Techniques for performing positioning in a cellular network are described. In one design, a first base station (e.g., a home base station) determines its position based on position information for at least one user equipment (UE) within radio coverage of the first base station and a second base station. The first base station sends at least one position request for the at least one UE to the second base station, receives position information for the at least one UE from the second base station, and determines a position estimate for itself based on the position information. In another design, the second base station receives a position request for the first base station, obtains position information for at least one UE, determines a position estimate for the first base station based on the position information, and sends the position estimate to the first base station. | 12-25-2008 |
| 20090011757 | PROCESSING QOFFSET PARAMETER - Systems, methodologies, and devices are described that employ indicators related to a parameter value(s) associated with a neighbor cell to facilitate communication by a mobile device in a network. The mobile device optionally can read a parameter value associated with a detected neighbor cell, and can provide, to the serving base station, signal strength information and indicator information that indicates whether, the mobile device read the parameter value. The serving base station can select a cell to which the mobile device is to be communicatively connected based in part on evaluating the received information. If a parameter value is not read by the mobile device, the serving base station can request the parameter value from a neighbor cell. The neighbor cell can provide a one-to-one indicator to indicate when a specified parameter value is to be applied with regard to a particular base station. | 01-08-2009 |
| 20090023448 | METHOD AND APPARATUS FOR INTER-SYSTEM HANDOVER - An inter-system handover system for a wireless communication system supports hand-down and hand-up of user equipment (UE) to different radio access technologies, including synchronous and asynchronous systems. Latency and handover connection failures are reduced by an access node (nodeB) broadcasting information about neighboring systems (targets) when the UE reception (RX) capability is both inside or outside the reception range of the target. A single RX chain is sufficient, although transitioning between a wireless wide area network (WWAN) to a wireless local area network may (WLAN) may advantageously benefit from simultaneous operation on two Rx chains. Optimized list of neighboring RAT systems (targets) are broadcast from the network, including measurement parameters and reporting instructions. Thereby, UE-driven reporting minimizes latencies. UE reports other-system searches to network only if needed for a handover. In addition, handover requests can be bundled with other-system measurement information, if necessary, for additional efficiencies. | 01-22-2009 |
| 20090040982 | Handover In A Wireless Data Packet Communication System That Avoid User Data Loss - An apparatus, method, processor(s), and computer program product avoids user data loss by network-controlled, user equipment assisted handover in a wireless data packet communication system. A wireless receiver receives radio link control (RLC) packet data units (PDUs) from user equipment (UE) being served by a source node. A wireless transmitter commands the UE to handover. A network communication interface transmits RLC Uplink (UL) context from the source node to the target node, and transmits RLC Downlink (DL) initialization message and buffered in-transit DL RLC PDUs from the source node to the target node. | 02-12-2009 |
| 20090041247 | KEY IDENTIFIER IN PACKET DATA CONVERGENCE PROTOCOL HEADER - Systems and methodologies are described that facilitate identifying a plurality of keysets utilized in a communications network. The keysets can include ciphering keys that provide data encryption and decryption and integrity keys that provide data integrity protection. A key identifier can be included in a packet data convergence protocol header that indicates a keyset employed in connection with data in a protocol data unit. In addition, a route indicator can be provided in a radio link control header that distinguishes a source cell and a target cell in networks configured without RLC reset. | 02-12-2009 |
| 20090046617 | METHOD AND APPARATUS FOR SENDING SCHEDULING INFORMATION FOR BROADCAST AND MULTICAST SERVICES IN A CELLULAR COMMUNICATION SYSTEM - Techniques for supporting broadcast, multicast, and unicast services in a cellular system are described. A Node B may multiplex data for broadcast and multicast services and data for unicast services on radio resources available for transmission. The Node B may periodically send scheduling information used to determine the radio resources carrying the broadcast and multicast services. In one design, the Node B may time division multiplex the data for the broadcast and multicast services and the data for the unicast services. The scheduling information may convey time unit(s) used for each broadcast or multicast service. In another design, the Node B may map the data for the broadcast and multicast services to time frequency blocks. The scheduling information may (i) convey the time frequency block(s) used for each broadcast or multicast service or (ii) point to control information conveying the time frequency block(s) used for each service. | 02-19-2009 |
| 20090047954 | CELL RESELECTION IN A WIRELESS COMMUNICATION SYSTEM - Techniques for performing cell reselection in a wireless communication system are described. A user equipment (UE) may initially camp on a first cell. While camped on the first cell, the UE may identify second and third cells deemed to be better than the first cell. The UE may move from the first cell to the second cell without performing cell reselection to camp on the second cell. After moving to the second cell, the UE may obtain at least one cell reselection parameter for the second and/or third cell and may update the rankings of the second and third cells based on the cell reselection parameter(s). The UE may then perform cell reselection from the first cell to the second or third cell based on the updated rankings, e.g., perform inter-frequency cell reselection from the first cell to the third cell without actually camping on the second cell. | 02-19-2009 |
| 20090086676 | METHODS FOR INTRA BASE STATION HANDOVER OPTIMIZATIONS - The method and apparatus as described are directed toward techniques and mechanisms to improve efficiency in wireless communication networks through optimization of handover scenarios. Determining whether an intra-base station or inter-node-B handover is too performed, and determining the protocol layers to reset during the handover based at least in part on the type of handover to be performed increases the overall efficiency of the wireless network. | 04-02-2009 |
| 20090122736 | USING DTX AND DRX IN A WIRELESS COMMUNICATION SYSTEM - Systems, methodologies, and devices are described that can facilitate reducing power consumption associated with mobile devices. A mobile device can utilize a sleep mode controller that can facilitate selecting and/or switching to a desired sleep mode based in part on predefined sleep mode criteria. The sleep modes can include a non-sleep mode, light sleep mode, and/or deep sleep mode. The mobile device can employ an analyzer to evaluate information related to explicit signals, implicit signals, and/or the current sleep mode to determine whether a condition is met based in part on the predefined sleep mode criteria such that a transition to a different sleep mode is to be performed. If such a condition is met, the sleep mode controller can facilitate transitioning from the current sleep mode to a different sleep mode to facilitate reducing power consumption by the mobile device. | 05-14-2009 |
| 20090124259 | LAYER 2 TUNNELING OF DATA DURING HANDOVER IN A WIRELESS COMMUNICATION SYSTEM - Techniques for sending data during handover with Layer 2 tunneling are described. In one design, a user equipment (UE) sends first Layer 2 packets to a source base station prior to handover to a target base station. The UE sends at least one second Layer 2 packet to the target base station, which identifies the second Layer 2 packet(s) as being intended for the source base station and thus forwards the second Layer 2 packet(s) to the source base station via a Layer 2 tunnel. The UE sends third Layer 2 packets to the target base station after the handover. The target base station processes the third Layer 2 packets to obtain IP packets and sends the IP packets to a serving gateway after a trigger condition, which may be defined to achieve in-order delivery of IP packets from the source and target base stations to the serving gateway. | 05-14-2009 |
| 20090149162 | USER EQUIPMENT CAPABILITY UPDATE IN WIRELESS COMMUNICATIONS - Systems and methodologies are described that facilitate unsolicited indication of mobile device capability change in wireless communication networks. Upon establishing communication with an access point, a mobile device can experience a change in capability, such as by attaching a device, changing a setting in a user interface, and/or the like. Rather than waiting for a reconfiguration command, when changing base stations or switching from idle to active mode, the mobile device can transmit an unsolicited message to the access point indicating the change. The access point can support the change in subsequent uplink communications or deny such support and can accordingly notify the mobile device via radio resource control (RRC) message. | 06-11-2009 |
| 20090190544 | METHOD AND APPARATUS FOR CHANNEL IDENTIFICATION IN A WIRELESS COMMUNICATION SYSTEM - Systems and methodologies are described that facilitate classification and identification of a channel associated with a wireless data transmission. As described herein, a channel designated for transmission of a packet can be selected from among multiple usable channels, based on which a bit at a predefined location in the packet can be set to a logical value indicative of the selected channel. As further described herein, extraction of the logical value from the predefined location and identification of the corresponding channel can be performed by a recipient of the packet without requiring parsing of the message. In one example described herein, a Dedicated Control Channel (DCCH) can be identified by setting a Logical Channel Identifier (LCID) bit in a DCCH packet to a predefined value. In another example, a Common Control Channel (CCCH) can be identified by embedding a Boolean constant within a message structure contained in a CCCH packet. | 07-30-2009 |
| 20090247176 | MANAGEMENT OF WIRELESS CONNECTIONS - Techniques for signaling whether or not a radio resource control (RRC) connection should be maintained are provided. The signaling may be provided, for example, in existing NAS transport messages, or in separate messages. The signaling may be provided in the uplink and/or downlink direction. | 10-01-2009 |
| 20090296675 | SYSTEMS AND METHODS FOR MANAGING RRC CONNECTIONS IN WIRELESS COMMUNICATIONS - Systems and methodologies are described that facilitate selective release of mobile devices using conflicting identifiers when communicating with an access point. The access point can detect the conflicting identifier and transmit a selective release message to the mobile devices. The selective release message can include a disambiguation identifier so the appropriate mobile device can identify that it is incorrectly connected to the access point and can release its connection. The disambiguation identifier can be one or more unique aspects of the correctly or incorrectly connected mobile device, such as an identifier, previous message related aspects, whether a security or context check can be decoded, etc. Thus, connection of the incorrectly connected mobile device can be released without additionally releasing the correctly connected mobile device. | 12-03-2009 |
| 20090310503 | METHOD AND APPARATUS FOR MANAGING INTERACTION BETWEEN DRX CYCLES AND PAGING CYCLES - Systems and methodologies are described that facilitate managing interaction between paging and discontinuous reception (DRX) cycles for users operating in a communication system. As described herein, a connected mode user having an associated DRX cycle can modify its schedule for paging reception to minimize unnecessary periods of activity. For example, a user can initially schedule monitoring of paging occasions that coincide with periods of activity associated with the DRX cycle of the user. If such paging occasions are not sufficient to reach a minimum required number of monitored paging occasions, additional paging occasions can be monitored as needed by scheduling additional periods of activity and/or extending periods of activity specified in the DRX cycle. Additionally or alternatively, a network can synchronize a connected mode DRX cycle associated with a user with an idle mode paging cycle for the user, thereby providing power and performance benefits with low complexity. | 12-17-2009 |
| 20090316603 | METHOD AND APPARATUS FOR MANAGING SYSTEM INFORMATION MODIFICATION IN A WIRELESS COMMUNICATION SYSTEM - Systems and methodologies are described that facilitate improved management of a system information modification in a wireless communication environment. Various techniques can be utilized as described herein to provide respective users with information indicative of changes to specific blocks or elements within a set of system information, thereby simplifying and accelerating acquisition of new system information after a modification. In a first example, a bitmap is generated and transmitted upon a system information modification that indicates which blocks(s) and/or element(s) of the system information changed in the modification, thereby allowing an associated user to abstain from reading or processing unchanged system information. In a second example, respective block(s) and/or element(s) of the system information can include an internal value tag that indicates to a receiving entity whether the corresponding block(s) or element(s) have changed, thereby allowing a user to discard unchanged block(s) or element(s) without performing further processing. | 12-24-2009 |
| 20100029280 | PDCP BEHAVIOUR AT HANDOVER AND CONNECTION RE-ESTABLISHMENT - Systems and methodologies are described that facilitate configuring a flush timer within a wireless environment in order to provide robust communications in regards to handover or re-establishment. The flush timer can be triggered upon successful completion of reconfiguration re-establishment. Moreover, the flush timer can be triggered upon successful completion of handover. In the case of handover and re-establishment, a separate indication of handover to packet data convergence protocol (PDCP) from the start of PDCP flush timer can be utilized. | 02-04-2010 |
| 20100034126 | METHOD AND APPARATUS FOR HANDLING MEASUREMENT GAPS IN WIRELESS NETWORKS - In a wireless communication system, user equipment (UE) has autonomy provided by one or more set of rules to handle processing during a measurement gap. UE can ignore or use only a portion of the whole measurement gap if not needed. Thereby, an urgent need for remaining tuned to source carrier frequency can be supported, such as utilizing Random Access Channel (RACH) procedure. UE can also choose to tune to a target carrier frequency supporting timely handovers. Depending on the type of processing required (download shared channel (DL-SCH, UL-SCH, TTI bundling, RACH or SR), the UE may store requests and process the measurements during the gap or ignore the gap measurement as if there were no gaps. | 02-11-2010 |
| 20100056166 | Method and Apparatus for Reinforcement of Broadcast Transmissions in MBSFN Inactive Areas - A method for a wireless communication system includes broadcasting that a first service is available in a first MBSFN and a second service is available in a second MBSFN. The method includes supporting a service not broadcasted as available. For example, supporting the first service with the second MBSFN and/or supporting the second service with the first MBSFN. The supporting or reinforcing can be done by echoing. The echoing is scheduled along with the owned service. | 03-04-2010 |
| 20100075679 | BEARER COUNT ALIGNMENT DURING INTER-RAT HANDOVER - Certain aspects of the present disclosure provide a method for bearer count alignment during handover of a user equipment (UE) from a first radio access technology (RAT) to a second RAT. The UE establishes radio resource control (RRC) connections with the second RAT and transmits data radio bearer (DRB) capability of the UE to the second network. The second network utilizes this information to set up the DRBs with the UE. | 03-25-2010 |
| 20100105380 | METHOD AND APPARATUS FOR BROADCASTING SYSTEM INFORMATION IN A WIRELESS COMMUNICATION NETWORK - Techniques for broadcasting system information in a wireless communication network are described. A cell may support one or more public land mobile networks (PLMNs). The cell may send a PLMN table in a first message on a broadcast channel and may send at least one index to the PLMN table in a second message on the broadcast channel. The PLMN table may include entries for different possible PLMNs or different possible combinations of PLMNs. A UE may receive the first message from a serving cell and may receive the second message from a candidate cell for cell reselection. The UE may obtain the PLMN table from the first message and may obtain at least one index to the PLMN table from the second message. The UE may determine whether the second cell is accessible by the UE based on the PLMN table and the at least one index. | 04-29-2010 |
| 20100113010 | REPRIORITIZATION OF WIRELESS NETWORKS FOR RESELECTION TO SUPPORT VOICE CALL - Techniques for originating a voice call by a UE after performing reselection with reprioritization are described. The UE may operate in an idle mode and may camp on a first wireless network of a first radio access technology (RAT), which may not support voice service. The first wireless network may have the highest priority among all wireless networks detected by the UE. The UE may receive an indication to originate a voice call. The UE may then perform reselection from the first wireless network to a second wireless network of a second RAT by modifying the priorities of the frequencies of the first wireless network and/or the second wireless network. The UE may then originate the voice call with the second wireless network, instead of the first wireless network, in order to avoid having to perform circuit-switched (CS) fallback from the first wireless network to the second wireless network. | 05-06-2010 |
| 20100130237 | METHOD AND APPARATUS FOR DETERMINING DRX CYCLE USED FOR PAGING - Techniques for determining a discontinuous reception (DRX) cycle used to receive paging are described. A user equipment (UE) may have (i) a first DRX cycle used by a first network (e.g., a core network) to page the UE and (ii) a second DRX cycle used by a second network (e.g., a RAN) to page the UE. In an aspect, the UE may use the longer DRX cycle and ignore the shorter DRX cycle, when allowed, to extend battery life. In one design, the UE may receive an indication of whether the second DRX cycle can be ignored or is to be considered by the UE. The UE may use the longer DRX cycle if the second DRX cycle can be ignored and may receive paging from the first network and/or the second network based on the longer DRX cycle. In another aspect, the UE may negotiate a DRX cycle with a network. | 05-27-2010 |
| 20100172272 | PROVISION OF INTER-FREQUENCY SUBFRAME CONFIGURATION IN WIRELESS COMMUNICATION - Providing for inter-frequency timing provision in wireless communication is disclosed herein. By way of example, cells of a wireless network can be configured to acquire information pertaining to subframe timing configurations employed by nearby wireless cells, including cells that employ a different frequency as an acquiring cell. The subframe timing configuration can be forwarded to access terminals served by the acquiring cell, to facilitate proper reception of neighboring signals, including on the different frequency. Various formats are disclosed herein for conveying subframe timing configurations, including a single bit format and multiple bit formats, which can specify various ranges of timing information in relation to a known timing, or can specify a complete subframe timing configuration for one or more such cells. | 07-08-2010 |
| 20100172297 | METHOD AND APPARATUS FOR CELL BARRING IN A WIRELESS COMMUNICATION SYSTEM - Systems and methodologies are described herein that facilitate cell barring based on erroneous messages received within a wireless communication system. As described herein, in the event that a device fails to receive and/or decode respective messages transmitted from a network cell over a common communication channel, the device can implement one or more error handling procedures as described herein to reselect away from the network cell and/or a frequency associated with the network cell (e.g., as if the network cell was explicitly barred). Cell barring can be triggered as described herein based on a count of erroneous messages (e.g., consecutive messages, messages received within a predetermined time window, etc.), elapsed time between erroneous messages, or the like. Further, cell barring can be performed as described herein based on failure to acquire pre-scheduled system information, common system information determined to have invalid abstract syntax, or the like. | 07-08-2010 |
| 20100173610 | ACCESS STRATUM SECURITY CONFIGURATION FOR INTER-CELL HANDOVER - Systems and methodologies are described that handle security activation during handover in a wireless network. A new access stratum (AS) key can be provided to a serving access point (and a related wireless device) before and/or while preparing a target access point during an inter-cell handover. The serving access point can receive the new AS key and provide it to the target access point as part of handover preparation. The serving access point can then initiate inter-cell handover of the related wireless device indicating that the wireless device can utilize a new AS key before the serving access point has an opportunity to activate the new AS key with the wireless device. The wireless device can subsequently perform a random access procedure to the target access point and/or establish a connection therewith by transmitting other messages using the new AS key. | 07-08-2010 |
| 20100232362 | METHOD AND APPARATUS FOR PROVIDING POSITION RELATED DATA - Certain aspects of the present disclosure propose a method for providing positioning assistance data and other supporting information for positioning methods in a wireless communication system utilizing the long term evolution (LTE) standard. The positioning assistance data may be sent in a packet to a radio network node. The radio network node may broadcast the packet to one or more user equipments. | 09-16-2010 |
| 20100234026 | RESOURCE SEARCH IN A COMMUNICATION NETWORK - Methods, apparatus and computer program products are provided to facilitate the acquisition of radio recourses when an initial redirect attempt to acquire the necessary resources fails. The disclosed embodiments enable the determination as to whether or not a desired service is available on a target set of radio resources. Upon the failure to acquire the service, a preferential search of additional radio resources is conducted for acquisition of the service. The disclosed concepts are applicable to a variety of technologies, such as UMTS, GSM, 3GPP WCDMA and LTE, 3GPP2 1xRTT and HRPD, WLAN, WiMAX, DSL and passive optical network (PON). This Abstract is provided for the sole purpose of complying with the Abstract requirement rules that allow a reader to quickly ascertain the disclosed subject matter. Therefore, it is to be understood that it should not be used to interpret or limit the scope or the meaning of the claims. | 09-16-2010 |
| 20100279648 | SYSTEMS, APPARATUS AND METHODS FOR FACILITATING EMERGENCY CALL SERVICE IN WIRELESS COMMUNICATION SYSTEMS - Systems and methods for facilitating emergency call service are provided. The method can include modifying a configuration parameter of a user equipment (UE), wherein the configuration parameter is related to at least one of: network selection, cell selection or reselection or service selection within a wireless communication system, and wherein a modified configuration parameter results in a preference by the UE for a network, cell or service configured to support emergency calls at the UE. The method can also include prioritizing circuit-switched services over packet-switched services, utilizing the circuit-switched voice service preferentially or exclusively and/or prioritizing a network configured to offer emergency call service over the original serving network of the UE, based, at least, on the modifying the configuration parameter. Modifying the configuration parameter can be performed autonomously by the UE. The modified configuration can also enable callback services to a UE from the network. | 11-04-2010 |
| 20100296389 | FAILURE INDICATION FOR ONE OR MORE CARRIERS IN A MULTI-CARRIER COMMUNICATION ENVIRONMENT - Systems and methodologies are described that facilitate indicating a loss of channel quality on a component carrier of a plurality of component carriers. A UE can monitor configured component carriers to determine channel qualities associated therewith. The UE can transmit carrier quality information that includes the channel qualities of the plurality of component carriers. In addition, the UE can identify a component carrier experiencing a loss of channel quality and notify a base station of the component carrier with poor channel conditions. In one aspect, the UE can incorporate additional information into a scheduling request. In addition, the UE can generate a CQI report that contains the carrier quality information. Further, the base station, when a loss of channel quality occurs, can retry transmission on different carriers. Moreover, the base station can employ information provided by the UE when selecting a component carrier for a transmission. | 11-25-2010 |
| 20100303013 | DYNAMIC SELECTION OF SUBFRAME FORMATS IN A WIRELESS NETWORK - Techniques for dynamically selecting subframe formats in a wireless network are described. In an aspect, a base station may dynamically switch between different subframe formats to support communication for different types of user equipments (UEs). In one design, the base station may declare a set of subframes as multicast/broadcast single frequency network (MBSFN) subframes for first/legacy UEs. The base station may send signaling conveying the set of subframes as MBSFN subframes to the legacy UEs. The base station may dynamically select the formats of the set of subframes for second/new UEs, e.g., on a per subframe basis. The format of each subframe may be selected from a plurality of formats, which may include at least one regular subframe format, at least one MBSFN subframe format, and/or at least one blank subframe format. The base station may send transmissions in the set of subframes based on the selected formats. | 12-02-2010 |
| 20100309057 | Mobile-Based Positioning With Non-Conforming Use Of Assistance Data - Apparatus and methods for performing mobile-based positioning in a wireless communications system are presented. A position estimate is computed based on assistance data intended for a first position method. The mobile device ignores if a second positioning method is not specifically supported by a network and computes a position estimate using the second position method and a subset of assistance data intended for the first positioning method, which is supported by the network and is different from the second positioning method. | 12-09-2010 |
| 20100322067 | METHOD AND APPARATUS TO FACILIATE REESTABLISHING COMMUNICATIONS IN A WIRELESS NETWORK - Methods, apparatuses, and computer program products are disclosed that facilitate reestablishing a communication between a wireless terminal and a network. These embodiments include transmitting a reestablishment request from a wireless terminal to a network node via a source carrier. A reestablishment command is then received by the wireless terminal, which includes configuration data associated with at least one target carrier. A radio resource connection between the wireless terminal and the network is then reestablished via the at least one target carrier. | 12-23-2010 |
| 20100322079 | METHOD AND APPARATUS THAT FACILITATES MEASUREMENT PROCEDURES IN MULTICARRIER OPERATION - Aspects directed towards measurement procedures in multicarrier operation are disclosed. In a particular aspect, a wireless terminal selects a subset of cells, which include at least one serving cell and at least one non-serving cell. The subset of cells are then evaluated by obtaining a first measurement associated with the at least one serving cell and a second measurement associated with the at least one non-serving cell. A measurement event occurrence, which is based on a comparison between the first measurement and the second measurement, is then monitored. An occurrence of the measurement event triggers a measurement report transmission, which the network then uses to perform handovers. Other disclosed embodiments are directed towards placing a reception band, which include identifying a set of assigned component carriers and placing a reception band within the system bandwidth so that the placement overlaps with at least a portion of the assigned component carriers. | 12-23-2010 |
| 20100329210 | Resource Release At Source System During Handoff to Multi-Radio Access Technology Target System - Aspects describe coordination of resource release on a source system. An aspect relates to a network based coordination. Another aspect relates to a mobile device based coordination. Also provided is a network and mobile device coordinated approach. An un-coordinated approach is also provided. | 12-30-2010 |
| 20110026462 | Method and Apparatus For Packer Communications in Wireless Systems - Techniques for transmitting and receiving data in an efficient manner to potentially improve capacity for a wireless network and achieve power savings for a wireless device are described. The techniques utilize a Continuous Packet Connectivity (CPC) mode comprised of multiple (e.g., two) discontinuous transmission (DTX) modes and at least one (e.g., one) discontinuous reception (DRX) mode. Each DTX mode is associated with different enabled uplink subframes usable for transmission from the wireless device to the network. Each DRX mode is associated with different enabled downlink subframes usable by the network for transmission to the wireless device. The wireless device may send signaling and/or data on the enabled uplink subframes and may receive signaling and/or data on the enabled downlink subframes. The wireless device may power down during non-enabled subframes to conserve battery power. Mechanisms to quickly transition between the DTX and DRX modes are described. | 02-03-2011 |
| 20110117925 | METHOD AND APPARATUS FOR ASSISTED POSITIONING IN A WIRELESS COMMUNICATION SYSTEM - Systems and methodologies are described herein that facilitate reduced complexity network-assisted device positioning in a wireless communication system. As described herein, a mobile device and/or other suitable device can utilize positioning assistance messages received from a location server, a serving network cell, and/or other entities, to assist in position fixing based on reference signals (e.g., positioning reference signals (PRSs)) detected from nearby network cells. Positioning assistance messages as described herein can include, for example, information relating to PRS bandwidths, transmit antenna configurations, and/or other parameters of respective cells from which reference signals are detected by a device during positioning. As further described herein, messaging load can be reduced by providing bandwidth and/or antenna configuration information relative to a given reference cell, such that parameters of non-reference cells that are equivalent to corresponding parameters of the reference cell can be omitted from transmitted positioning assistance data. | 05-19-2011 |
| 20110141901 | ROBUST UE RECEIVER - Methods, systems, apparatus and computer program products are provided to improve the reliability of data reception. In one provided embodiment, a communication signal is parsed by a communication device to identify repeat request identifiers. The device determines an inter-arrival time of two instances of the same identifier and processes the communication signal based on a comparison between the inter-arrival time and a predetermined time. This Abstract is provided for the sole purpose of complying with the Abstract requirement rules that allow a reader to quickly ascertain the disclosed subject matter. Therefore, it is to be understood that it should not be used to interpret or limit the scope or the meaning of the claims. | 06-16-2011 |
| 20110143675 | METHOD AND APPARATUS FOR FACILITATING RADIO LINK MONITORING AND RECOVERY - Methods, apparatuses, and computer program products are disclosed for facilitating a radio link failure determination. A wireless terminal is configured to monitor a control channel quality of a control signal over at least one control carrier. A radio link failure determination is then made based on the control channel quality of the at least one control carrier. In other embodiments, rather than basing the radio link failure determination solely on the set of control carriers, the wireless terminal is configured to monitor a control channel quality over at least one additional carrier, not included in the set of control carriers, in response to a link loss detected over each of the set of control carriers. For such embodiments, the radio link failure determination is then made based on the control channel quality of the additional carrier(s). | 06-16-2011 |
| 20110158116 | METHOD AND APPARATUS THAT FACILITATES A TIMING ALIGNMENT IN A MULTICARRIER SYSTEM - Aspects are disclosed for facilitating a timing alignment in a multicarrier system. In one aspect, at least one downlink timing associated with at least one downlink carrier is determined, and an uplink timing associated with an uplink group of carriers is ascertained based on at least one downlink timing and a timing offset associated with the uplink group of carriers. Each of the uplink group of carriers is then transmitted within a threshold value of the uplink timing. In another aspect, a downlink communication is transmitted to a wireless terminal via at least one downlink carrier. This embodiment further includes assigning a timing offset to an uplink group of carriers, and providing the timing offset to the wireless terminal via the at least one downlink carrier. An uplink communication is then received via the uplink group of carriers according to the timing offset. | 06-30-2011 |
